Tack indicator



J. L. YOUNG.

TACK INDICATOR.

APPLICATION men JULY 30. 1920.

. L37, 75 Patented Nov. 28, 1922.

lNVEN OR ATI'ORNEY WITNESS:

Patented Nov. 28, l922.

an'ssn L. YOUNG; or eaoonrrnnnnrrssounr.

TACK Innroa'ron.

Application filed Jui i so,

J. o (ZZZ ii tom it may concern.

13 a it known that 1. Jesse Ti; YouNo. a citizen of the United States,residing at Brook held. in the county of Linn and State of lt lissouri,have invented new and useful Iinprovements'in Tack Indicators. of whichthe "following is a specification.

This invention relates to a tack indicator and has for its primaryobject the construction of a device of this character that will'ei'iahle the operator to immediately detect the nail in a shoe. I T

An object of the invention is to accomplish the foregoing result withoutinterfering with the neat appearance of the finished shoe.

Another object of the invention is the novel manner of constructingthecircuit closer or contact head so that it will be im possible for sameto pass over a tack ir-. respective of its position without operatingthe circuit closer.

With these and other objects in view the invention will be betterunderstood from the following detailed description taken in connectionwith the accompanying drawing wherein:

Fig. 1 is a diagrammatic view.

Fig. 2 is an enlarged sectional View through the circuit closer or head.

Figs. 3, 4L and 5 are detailed views.

At the beginning I wish to call attention to the fact that in themanufacture of shoes the insole is tacked to a wooden last, later in theoperation these tacks are removed but quite often some are overlooked ormissed and the tacks are left in the shoe projecting in variousdirections. The purpose of my device is to detect the presenceof thetacks irrespective of their bent formation and in such a manner that aneat apperance of the finished shoe will not be spoilt. 7

Again referring tothe drawing ilustrat ing one construction of myinvention for accomplishing the foregoing result the numeral 1designates a circuit closer or contact head for closing the signalcircuit 2 when engaging a tack. This signal circuit 2 may be of any wellknown construction for giving a signal when closed. The circuit closerconsists of a base 3 into which is screwed at spaced points a pluralityof contact pins 4. This base may be of any r quired shape to facilitatetraveling of the same Within the shoe as shown in Fig. 1.

1920. Serial No. 409,02

but. for the purpose of illustration nave shown same elliptical inshape.= Sup iorted block 8 having wedge shape extremities 9 forthepurpose hereinafter explained. The

screws 10 connect this block to the strips 6 and are further insulatedfrom and support the contact member 11 in such a manner that the same ispermanently spaced from the block 8. Mounted upon the base is a socket12 detachably engaged by the handle 13 which is of the required shape tobe easily inserted into the shoe. To complete the invention I provide atack groove 14: in each end of thecontact member 11 for thepun pose nowto be described. Referring to the enlarged sectional view whichillustrates the sole of a shoe in a diagrammatic manner it will be seenthat when the tack extends in a direction as illustrated at B thedistance between one of the contact pins and the contact strip will bebridged for closing the signal circuit. When a tack extends as shown atC it will be lodged inbetween' the contact member 11. andblock 8 so astoclose the si nal circuit. When the tacks are bent as illustrated at l)and E the distance be tween the contacts will be bridged tor closinc;the signal circuit. One of the advantages of the tack groove is thatwhen tack is in the spaces arranged. at the opposite ends i of thecontact block the tack in the -inovement of the device will pass throughthe tack groove so as to assume a position to bridge the distancebetween the two contacts.

A very importantfeature of my invention is the novel manner ofconstructingand associating the parts so that the device may be readilymoved about in the shoe and all surfaces properly passed over so thatwhen a tack is present it will he sure to bridge at least two of thecontacts for closing the signal circuit.

It is. of invention mav be constructed in various other manners and theparts associated in different relations and. therefore, I do not desireto be limited. in any manner except course. to be understood that the asset forth in the claims hereunto appended.

Having thus described my invention what I claim is:

l. A tack indicator comprising a plurality of contacts supported spacedfrom each other, an indicating circuit connected to the contacts, meansfor moving the contacts about in a shoe to bring about engagementbetween the tacks and the contacts for closingthe said circuit.

2. In a tack indicator, a head, a plurality of spaced contacts carriedby said head and connected one with the other, a single spaced contactcarried by said head and spaced from said plurality 01 contacts, anaudible signal in circuit with said sraced and luralitv of contactswhereby When a bridging substance is engaged by said spaced and anyoneof said plurality of contacts, said audible signal will be excited.

A tack indicator comprising signal circuit, and a contact head forclosing the circuit when a tack is engaged, said h ad. consistingof aplurality of spaced cont-act Plus, a contact strip spaced from the pinsa pre-determined distance, and a pair of contact members actingindependently to close said circuit when a. tack is engaged thereby.

4-. A tack indicator comprising a "l circuit, a circuit closer, and ahandle or movingthe circuit closer about in a shoe, said circuit closerconsisting of a plurality of contact nienibers spaced apart andinsulated in pairs for the purpose set itcrth.

in testimony whereof I atiix my signature.

JESSE n Yonue.

